JPH10215614A - Seedling filling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly and surely remove the culture soil of the seedling lacking cell of an inspection/removal tray while pushing adjacent seedlings aside. SOLUTION: The lack of the seedling on the inspection/removal tray 18 in an inspection/removal part 14 is detected by a detection plate 36 and the culture soil of the detected seedling lacking cell is sucked and removed by a vacuum nozzle 52. The vacuum nozzle 52 is formed freely movably at the upper part of the inspection/removal tray 18 and the culture soil of the cell is sucked by vacuum in the state of bringing the lower end of the vacuum nozzle 52 into contact with the upper surface of the seedling lacking cell. In this case, an air passage 33 passed from the vacuum nozzle 52 to a lower part is formed at a position opposite to the vacuum nozzle 52 in the inspection/ removal part 14, and at the time of sucking the culture soil by the vacuum, the water discharge hole 23 of the cell is made to communicate with the air passage 33 and suction is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling replenishing apparatus, and more particularly to a seedling replenishing apparatus for detecting missing or defective seedlings in a cell tray before transplantation and automatically replenishing the cells such as the missing cells. It is.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 47, seeds such as vegetables are sown in a cell tray 140 having a large number of cells 140a in a seedling raising facility, and then each cell 14a is transplanted before transplantation.
It is possible to automatically detect the presence or absence of germination and the presence of defective seedlings at 0a, remove the cultivated soil of the cell 140a that has been lost, etc., and supplement the cell portion from which the cultivated soil has been removed with new good-quality seedlings. Have been done.

[0003] As a seedling replenishing device of this kind, for example, Japanese Unexamined Patent Publication No. Hei.
7, JP-A-7-322707, JP-A-7-322707
There is one described in Japanese Patent No. 107812.

According to the technique described in, for example, Japanese Patent Application Laid-Open No. H8-23788 (hereinafter referred to as a first conventional example), seedlings taken out of a supply tray by a transplanting hand are sequentially transplanted. In a transplanting device adapted to be planted in a tray, a moving path for moving the transplanting hand in a loop is provided with a seedling extracting section for extracting a seedling from a supply tray and a transplanting section for implanting the extracted seedling in a transplanting tray. A sensor for detecting an abnormality of the extracted seedling is provided on the movement path between the seedling removal part and the transplantation part, and when the abnormal seedling is detected, the transplantation hand is returned to the transplantation start position of the loop movement path via the bypass path. The technique is described.

According to the technology described in Japanese Patent Publication No. Hei 7-16327 (hereinafter referred to as a second conventional example), a detecting unit for detecting a missing or defective seedling of a seedling sown in a nursery box, Equipped with a removal unit for crushing and removing missing plants and defective seedlings, and when missing plants and defective plants are detected, the rotating screw and suction nozzle provided in the removal unit crush the missing plants and defective plants.・ To be removed.

Further, according to the technique described in Japanese Patent Application Laid-Open No. 7-322707 (hereinafter referred to as a third conventional example), while growing seedlings in a pot formed in a seedling raising tray, An injection nozzle for blowing high-pressure air onto the soil in the pot to pulverize the soil, and a suction nozzle for sucking and removing the soil crushed by the injection nozzle are provided.

Further, according to the technology described in Japanese Patent Application Laid-Open No. 7-107812 (hereinafter referred to as a fourth conventional example),
In a seedling inspection apparatus for inspecting the quality of seedlings planted in each cell of a tray at regular intervals, a finger having opposed mounting pieces set at a predetermined interval and a finger provided on the opposed mounting pieces of the fingers are provided. A seedling inspection sensor is provided, and the mounting piece of the finger is inserted between each cell, and the quality of the seedling is inspected by obtaining the shaft diameter of the seedling based on a signal output from the seedling inspection sensor. Have been.

[0008]

However, the above-mentioned first method
According to the conventional example, when the seedlings taken out of the supply tray are transferred and planted in the transplanting tray, the seedlings are directly planted in the transplanting tray by the transplanting hand, so that the roots of the seedlings closely adhere to the bottom of the transplanting tray. Was difficult.

Then, after removing the missing seedlings or defective seedlings, if the seedlings newly replenished in the empty cells are floating without adhering to the bottom of the cells, or have poor adhesion to the side walls of the cells. Is easy to remove the seedling when moving the tray,
If the seedling collapses during transportation and the seedling floats from the bottom of the cell, the outer roots (root pots) may dry out and cause poor growth, or the seedling may be depleted due to poor water absorption from the bottom.

Further, according to the second conventional example, a removing section for crushing and sucking a missing or defective seedling in a pot is provided. When a defective seedling is detected, the removing section is lowered from above to remove the defective seedling. Is sucked with a vacuum cleaner together with the cultivation soil. Normally, in order to suck quickly by vacuum, it is necessary to form a hole at the bottom of the pot to form an air vent passage, but there is no disclosure of these.

Further, according to the third conventional example, high-pressure air is blown onto the soil in the pot to pulverize the soil, and the ground soil is sucked by a suction nozzle. The pot is placed on a receiving plate. Therefore, there is no air vent hole in the lower part of the pot, and it is difficult to quickly remove the soil.

According to the fourth conventional example, a means for detecting a missing plant or a defective seedling is disclosed, but no consideration is given to how to treat thereafter.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to quickly and surely remove the cultivated soil of a cell lacking seedlings in an inspection / removal tray while pushing out adjacent seedlings. It is another object of the present invention to provide a seedling replenishing device capable of accurately bringing the replenished seedling into close contact with the bottom of the missing cell.

[0014]

In order to achieve the above object, according to the first aspect of the present invention, each cell (16
Cell tray (1) in which seedlings (17) were planted in a)
6) a supply section (12) on which each cell (18a) can be placed;
And an inspection / removal unit (14) on which a cell tray (18) on which seedlings (19) are planted can be placed on the cell tray (18) in the inspection / removal unit (14). Detecting and removing the cultivated soil of the cell (18a) in the seedling-missing portion and adding the supply unit (16) to the cell (18a)
In the seedling replenishing device (10), which supplies seedlings from the cell (16a), a tubular member (52) is movably provided on the cell (18a) of the seedling missing portion, and the tubular member ( A vacuum head (44) communicates with the upper end of the tubular member (52), and an air passage (33) is provided at a position facing the tubular member (52) in the inspection / removal section (14). The lower end of the cell (1
8a), when the soil of the cell (18a) is sucked by the vacuum head (44) in contact with or close to the cell (18a), the drain hole (23) of the cell (18a) is inserted into the air passage (3).
3).

According to the second aspect of the present invention, the inspection
The removing unit (14) includes an inspection / removal conveyor (20) on which a cell tray (18) having a large number of cells (18a) can be placed in a plane, and the inspection / removal conveyor (20) includes:
The cell trays (18) are conveyed so as to move one row at a time, and the portion facing the one row is guided so as to be recessed downward to form the air passage (33), and the cylindrical member (52) is It is configured to move along the one row.

According to the third aspect of the present invention, the cylindrical member (52) is moved in the vertical direction, and is rotatably provided at the lower end thereof at the front and rear portion of the cell tray (18) in the one row direction. (54), and suspend the tubular member (5).
Plates (3) which are arranged on the left and right portions of (2) and move integrally with the movement of the tubular member (52) in the one-row direction.
6), the front and rear side plates (54) are located close to each other at a position above the tubular member (52), and are mutually moved as the tubular member (52) is lowered. , So that they are separated from each other.

According to the fourth aspect of the present invention, the left and right plates (36) are provided with a sensor (38) for detecting a seedling on the cell (18a), and the inner width of the left and right plates (36) is adjusted to the width. The width is set slightly larger than the left and right outer widths of the tubular member (52), and the tubular member (52) is inserted between the left and right plates (36) when the tubular member (52) is lowered. , Characterized in that.

According to the fifth aspect of the present invention, a vacuum base (40) is fixed to the upper end of the cylindrical member (52), and the cylindrical member (5) is fixed to the vacuum base (40).
2), an opening (50) is provided, and a hole (49) is provided adjacent to the opening (50).
4) is movably supported between the opening (50) and the hole (49).

(Operation) With the above configuration, the seedling refilling device (10) of the present invention can place the cell tray (16) having a large number of cells (16a) in which the refilling seedlings (17) are planted. A cell tray (1) having a supply section (12) and a number of cells (18a) in which seedlings (19) for inspection and removal are planted.
And an inspection / removal unit (14) on which the cell tray (1) can be placed.
8) The lack of the seedlings above is detected, and the cultivation of the cell (18a) of the detected seedling deficient portion is suctioned and removed by the vacuum means (32), and the cultivated cell (18a) is removed.
To supply new supplemental seedlings (17) from the cells (16a) of the supply section (12).

For this purpose, the inspection / removal tray (1)
Above 8), a tubular member (52) is provided movably on the cell (18a), and a vacuum head (44) communicates with the upper end of the tubular member (52). With the lower end of the tubular member (52) in contact with the upper surface of the cell (18a) in the portion where the seedlings are missing, the cell (18)
The soil of a) is sucked by the vacuum.

On the other hand, an air passage (3) penetrating downward from the cylindrical member (52) is provided at a position of the inspection / removal section (14) facing the cylindrical member (52).
3) is formed, and when the cultivation of the seedling missing cell (18a) is sucked by the vacuum head (44) through the cylindrical member (52), the drain hole (2) of the cell (18a) is sucked.
3) communicates with the air passage (33) to facilitate suction.

Note that the reference numerals in parentheses described above are for comparing the drawings, and do not limit the configuration of the present invention.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing the entire seedling refilling device according to the present invention, and FIG. 2 is a side view thereof. 1 and 2, the seedling replenishing device 10 includes a supply unit 12 on which a supply tray 16 in which seedlings 17 are planted is placed in each cell 16 a having a square shape in plan view. An inspection / removal unit 14 on which an inspection / removal tray 18 in which seedlings 19 are planted is placed in each of the cells 18a.

The supply unit 12 is disposed at the upper rear of the front of the apparatus, and the inspection / removal unit 14 is disposed at the lower front of the front of the apparatus. Has a predetermined step.

The inspection / removal section 14 comprises an inspection means 30 for detecting the lack of seedlings planted in each cell 18a of the inspection / removal tray 18, and a vacuum means 32 for sucking cultivated soil and the like from the missing cells 18a. And the missing cell 18
If a is present, the cultivated soil is removed from the cell 18a in the missing portion, and the cell 18a from which the cultivated soil has been removed is supplemented with a new seedling with cultivated soil from the supply unit 12.

As shown in FIG. 3, the inspection / removal unit 14
Has an inspection / removal conveyor 20 on which an inspection / removal tray 18 in which a large number of cells 18a are arranged in a matrix in a plane can be placed. The cells 18a are intermittently conveyed by the drive motor 70 such that the cells 18a are shifted one by one.
Seedlings 19 are planted in the cells 18a, respectively.
Normal seedlings are not necessarily planted in all of these cells 18a, and seedlings are missing because seeds do not appear even when seeded, or seedlings that are poorly grown are included.

The supply section 12 has a large number of cells 1 in a plane.
6a has a supply conveyor 22 on which the supply trays 16 arranged in a matrix can be placed.
Are transported intermittently by the drive motor 72 such that the cells 16a of the supply tray 16 are shifted one by one. In each cell 16a of the supply tray 16, a normal seedling of the same species as the seedling planted in the inspection / removal tray 18 is planted.

Each cell 16a of the supply tray 16 and each cell 18a of the inspection / removal tray 18 are formed to have the same shape and the same size, and the inspection / removal conveyor 20 and the supply conveyor 22 are In order to reduce the amount of movement of the supplemented seedlings and the like at the time of supplementing the seedlings, their transport directions are conveyed in opposite directions as indicated by arrows.

An operation panel 27 is provided on the front side of the apparatus and above the portal frame 24.
Thus, the operations of the supply unit 12 and the inspection / removal unit 14 are controlled by operating the push buttons. The supply unit 1
2, a control panel 29 and a relay box 31 are provided. The control panel 29 and the relay box 31
The microcomputer 2 and various actuators are built in so that the inspection unit 2 and the inspection / removal unit 14 can operate sequentially.

Further, a portal frame 24 is provided in the surrounding space of the inspection / removal conveyor 20 and the supply conveyor 22 at the intermediate portion in the transport direction so as to cross both the conveyors 20 and 22. A horizontal frame 25 is integrally fixed at a predetermined height position of the portal frame 24, and a linear drive device 26 for inspection and removal is mounted on the horizontal frame 25 via a mounting plate 80. , Provided above the inspection / removal conveyor 20 (see FIG. 4).

FIGS. 5 to 7 show the linear driving device 26.
As shown in FIG. 7, an inspection / removal guide 28 is slidably fitted to the inspection / removal guide 28 to inspect defective or missing seedlings planted in the cells 18a of the inspection / removal tray 18. Inspection means 30 for performing the inspection, and the missing cell 18a
Vacuum means 32 for sucking cultivated soil and the like is provided.

The inspection means 30 is provided on the inspection / removal guide 28 so that the longitudinal direction of the
The lift cylinder 34 has a lift cylinder 34 attached with its upper side 4b, and two opposed inspection plates 36, 36 suspended below the cylinder 34a of the lift cylinder 34. The inspection plate 36 has a boot shape when viewed from the side, and the opposed width thereof is opposed to each other at an interval substantially equal to the length of one side of each cell 18a of the inspection / removal tray 18 having a square shape in plan view. A pair of inspection sensors 3 including light emitting / receiving elements are provided below the inspection plate 36.
8, 38 are arranged facing each other.

As shown in FIG. 8, the inspection plate 36 has a horizontal portion 36a whose front portion in the moving direction projects substantially horizontally.
And a convex portion 36b is also provided on the heel portion of the rear portion, so that the seedlings can be easily separated both when the test plate 36 moves forward and when the test plate 36 moves backward.

Then, the inspection plate 36 is used for inspection and inspection.
The linear drive device 26 moves a position at a height position slightly apart from the upper surface of the removal tray 18 in a direction substantially orthogonal to the transport direction of the inspection / removal conveyor 20, and performs an inspection by the inspection sensor 38. It is detected whether or not each cell 18a of the removal tray 18 has a missing seedling or the like. At this time, the inspection plate 36 serves to prevent interference between adjacent seedlings at the time of inspection for missing seedlings or the like. During the inspection, the transport of the inspection / removal conveyor 20 is stopped.

As shown in FIGS. 5 to 7, the vacuum means 32 includes an operating rod 34b of the elevating cylinder 34.
And a switching cylinder 42 mounted on the vacuum base 40.
A vacuum head 44 attached to the tip of an operating rod of the switching cylinder 42; and a vacuum base 40 so as to communicate with a suction port of the vacuum head 44.
And a vacuum nozzle 52 suspended from the nozzle.

The vacuum nozzle 52 is vertically guided and held by a frame 55 provided at an intermediate portion in the longitudinal direction, and the frame 55 is provided with a guide stopper protruding from the inspection / removal guide 28. The guide 53 is supported by a guide so as to be able to move up and down. A stopper member 55a is provided on an upper portion of the frame 55, and the stopper member 5a is provided.
The lowering position of the frame 55 is regulated by 5a.

As shown in FIG. 9, the inspection plate 36, the vacuum nozzle 52, and the like are integrally mounted on the elevating cylinder 34, and can be moved by the linear driving device 26 for inspection and removal. This makes it possible to reliably move the vacuum nozzle 52 to the seedling missing position detected by the inspection sensor 38.

As shown in FIGS. 10 (a) and 10 (b), the inspection plate 36 and the inspection sensor 38 are attached to the bottom of the lift cylinder 34, and the lift cylinder 3
4 is effectively used, and the center of the elevating cylinder 34 (the center of the vacuum nozzle 52) and the center of the inspection plate 36 are made to coincide with each other so that the inspection plate 36 and the vacuum nozzle 52 move up and down. Prevents interference.

The base side of the main body of the vacuum head 44 is connected to a vacuum cleaner 48 via a vacuum hose 46 (see FIG. 1), and the vacuum base 4 is connected to a suction port side.
The vacuum nozzle 52 hangs downward in the longitudinal direction through a seedling drop opening 50 formed at zero. The cross section of the vacuum nozzle 52 has the same shape as the square cells 16a and 18a, and is formed to have a size slightly larger than one side of the cell.

As shown in FIG. 11, the external dimensions of the vacuum nozzle 52 are different from those of the inspection plate 3 which is disposed opposite to the vacuum nozzle 52.
The width is slightly smaller than the left-right interval (inner width) between the inspection plates 36 and 36 so that when the vacuum nozzle 52 descends, the distal end of the vacuum nozzle 52 smoothly enters between the inspection plates 36 and 36. . For this reason, the inspection plate 36 serves as a guide when the vacuum nozzle 52 descends, and after the adjacent seedlings are swept right and left by the inspection plate 36, the vacuum nozzle 52 descends. Seedlings are prevented from hindering the vacuum nozzle 52 from descending.

As shown in FIGS. 12A to 12C, a spacer 106 is attached to the inside of the lower end portion of the vacuum nozzle 52 as necessary (see FIG. 12A). This is because a large number of cells are arranged in a matrix in the cell tray, and the number of cells (holes) accommodated therein is also different. Therefore, the sectional shape of the vacuum nozzle 52 is adapted to a cell tray having, for example, 128 holes. (See FIG. 2B), if this is applied to a 200-hole cell tray as it is, a gap is generated because the cell width is small with respect to the inner diameter of the vacuum nozzle 52, and it is necessary to correct this. (See FIG. (C)). The spacer 106 has a chamfer 1 inside the upper end to prevent the supplemented seedlings falling in the vacuum nozzle 52 from being caught.
06a is given.

Next, as shown in FIG. 13 (and FIG. 6),
By operating the switching cylinder 42, the suction head of the vacuum head 44 is opened at the position where the seedling dropping port 50 of the vacuum nozzle 52 is formed (the position where the soil is sucked) and the seedling dropping port 50 is opened. Position (standby position)
It is provided so that it can move freely. In the standby position, a hole 49 having a predetermined size is formed in the vacuum base 40 so as to bleed air so that the vacuum port at the end of the vacuum head 44 is not closed.

As shown in FIG. 14, when the vacuum head 44 is switched to the standby position, the opening 49 at the standby position is provided with the hole 49 formed in the vacuum base 40. become. Moreover, since the hole 49 is opened in the middle between the elevating cylinder 34 and the vacuum nozzle 52, and the lower part of the hole 49 is open, even if the vacuum is continuously operated, the vacuum base 40 is opened. Is sucked or the vacuum cleaner 48
So that the burden on employees is not increased.

As shown in FIG. 15, the lifting cylinder 3
Above the upper part 4, a vacuum base 40 is provided horizontally, and the vacuum nozzle 52 is suspended substantially in parallel with the elevating cylinder 34. In this way, by attaching the vacuum head 44 and the vacuum nozzle 52 and the like integrally via the vacuum base 40,
The lifting cylinder 34 can be moved simultaneously and integrally with the lifting and lowering of the lifting cylinder 34.

As shown in FIG. 16 (and FIG. 6),
Vacuum guides 54, 54, which are plates that can be opened and closed outward around a fulcrum 54a and are substantially perpendicular to the inspection plate 36, are formed at the lower end of the frame 55. Are located. The vacuum guide 54 has a pair of left and right sides in a beak shape and is formed to have a narrow tip so that it can easily enter the seedling removed for inspection.

As shown in FIGS. 17A to 17C, the inspection plate 36 and the vacuum guide 54
And separate the space in four directions in a plan view, and can remove the test removed seedlings. The opposite vacuum guide 5
A spring (tensile) 51 for applying a biasing force to the vacuum guides 54, 54 is provided between the vacuum guides 54, 54.

Therefore, when sucking the cultivated soil or defective seedling in the cell 18a of the inspection / removal tray 18 by the vacuum nozzle 52, the frame 55 and the vacuum guide 54 at the lower end thereof are lowered and stopped on the way. With the guide 54 closed inward, the vacuum guide 54
Enters the inspection-removed seedling, and then the vacuum nozzle 52 further descends and pushes the vacuum guide 54 open, so that the vacuum guide 54 can squeeze adjacent seedlings. Similarly, when the suction of the cultivation soil is finished and the vacuum nozzle 52 rises, the vacuum guide 54 is closed by the urging force of the spring 51 after the vacuum nozzle 52 rises.

As shown in FIG. 18, the interval between the inspection plates 36, 36 is substantially the same as the pitch of each cell 18a of the inspection / removal tray 18. The inspection plate 36 is located at the intermediate portion.

As shown in FIGS. 19A and 19B,
A pair of guides 37 are attached inside the inspection plates 36, 36, respectively, as necessary, in order to match the interval between the inspection plates 36, 36 with the interval between the cells 18a of the inspection / removal tray 18. Can be

This is for example the one used for cabbage.
This is because the distance between the cells 18a is different between the 28-hole cell tray and the 200-hole cell tray used for lettuce. Moreover, the guide 37 is connected to the inspection plate 3
By attaching to the outside of 6, the tip of the test plate 36 is covered to prevent damage to the seedlings.

As described above, as shown in FIGS. 20 to 23, the inspection / removal tray 1 is
8 is detected along the row direction of each cell 18a one by one, and if the seedling is detected missing in the predetermined cell 18a, the inspection plate 36 starts to decelerate. When the seedling of the next cell 18a is detected, the movement of the test plate 36 is stopped. At the stop position of the inspection plate 36, immediately below the vacuum nozzle 52, the predetermined cell 18a with the seedling missing is positioned (see FIGS. 20 (a) and (b)).

Next, the operating rod 3 of the lifting cylinder 34
4b is contracted, and the vacuum nozzle 52 moves down together with the vacuum base 40. This vacuum nozzle 52
When the stopper 55a of the frame 55 comes into contact with the guide stopper 53,
The lowering of the frame 55 stops (see FIG. 21). Then, due to the further contraction of the operating rod 34b, only the vacuum nozzle 52 moves down with respect to the frame 55 (see FIG. 22).

As the vacuum nozzle 52 descends,
The vacuum guide 54 is pushed and opened outward, the tip opening of the vacuum guide 54 contacts or approaches the upper surface of the cell 18a, and the soil in the cell 18a is sucked by the vacuum (see FIG. 23).

By the way, as shown in FIG. 24, the height position of the
The seedlings are dropped from the seedling drop opening 50 toward the inspection / removal tray 18 located below by a predetermined step H from the seedling dropping port 50. As described above, since the height of the upper surface of the supply tray 16 and the height of the seedling dropping port 50 are substantially the same, the supplemented seedlings are transferred linearly, and the amount of movement of the supplemented seedlings can be reduced. At the same time, the falling speed of the supplemented seedlings increases while the supplemented seedlings fall on the predetermined step H, and the falling seedlings are pushed into the cells 18a of the inspection / removal tray 18, so that the floating of the seedlings in the cells 18a is prevented. You.

Next, a description will be given of the seedling transfer means 56 for grasping the supplemented seedling from the supply tray 16 and transferring the supplemented seedling toward the seedling drop-in opening 50.

A seedling transfer means 56 is provided above the inspection / removal conveyor 20 and the supply conveyor 22 so as to be movable in a direction substantially perpendicular to the conveying direction of each conveyor 20, 22. The means 56 includes the supply tray 16
A function of grasping the supplemented seedling from each cell 16a and transferring it to the seedling dropping port 50 so as to supplement the empty cell 18a from which the cultivated soil and the like have been removed by suction from the predetermined cell 18a of the inspection / removal tray 18. Make

This seedling transfer means 56 is shown in FIGS.
As shown in FIG. 4 (and FIG. 4), a linear drive device 58 attached to the horizontal frame 25 of the portal frame 24 via a bracket 78 is slidably fitted to the linear drive device 58. It has a supply guide 60. An elevating cylinder 62 attached to the supply guide 60 has a longitudinal direction pointing up and down and an operating rod 62a facing down.
The insertion / removal cylinder 64 is integrally and movably attached to the operating rod 62a in an oblique direction.

A pair of claws 66 are attached to the lower portion of the insertion / removal cylinder 64 via an opening / closing chuck 68. These claws 66, 66 are shown in FIG.
As shown in (b), by the operation of the opening / closing chuck 68,
It is openable and closable left and right about the fulcrum on the side of the mounting base.

Then, each cell 16 of the supply tray 16 is
The nails 66 are pierced into the seedlings planted in a and closed by piercing the claws 66, and the seedlings are transferred to the seedling drop-in opening 50 by the linear drive device 58. At the seedling drop opening 50, the seedling is hooked on the peripheral portion of the seedling drop opening 50, and then the nail 66 is pulled obliquely upward by the insertion / detachment cylinder 64, so that the supplemented seedling is inserted into the vacuum nozzle 52. Supply.

In this embodiment, as shown in FIGS. 29 (a) and 29 (b), the shape of the seedling drop hole 50 is made to match the shape of the hole of the vacuum nozzle 52. Then, the nail is removed from the seedling by hooking the supplemental seedling on the edge of the seedling dropping port 50, and the seedling is allowed to fall freely after leaving the seedling once in the dropping port and free-falling the seedling. When dropping inside 52, the seedlings are allowed to fall in a stable posture with little movement.

In this embodiment, as shown in FIG. 30, the cross section of the vacuum nozzle 52 is changed to the cell 18a.
And the dimensions are slightly larger than the outer diameter of the cell 18a. As described above, by making the inner length W ₁ of the cross section of the vacuum nozzle 52 slightly larger than the width W of the upper surface of the falling seedling, the inclination of the seedling in the vacuum nozzle 52 can be prevented, and the seedling can be prevented. The falling seedling hits the lower cell 18a so that the seedling can be reliably accommodated in the cell 18a.

Similarly, as shown in FIG. 31, the cross-sectional shape of the vacuum nozzle 52 is made to be the same square as the shape of the cell 18a, and slightly larger than the cell shape, so that the vacuum nozzle 52 and the cell 18a are as small as possible. The gap with the outside diameter is made small. Thereby, the vacuum nozzle 52 and the adjacent cell 18a are prevented from overlapping, and the vacuum efficiency is improved.

Further, as shown in FIG. 32 (and FIG. 3),
On both left and right sides of the inspection / removal conveyor 20 and the supply conveyor 22 in the transport direction, tray guides 76 are provided to support the flange portions 74 on the periphery of the inspection / removal tray 18 and the supply tray 16 from below. The tray guide 76 is provided over substantially the entire length of the conveyor to stabilize the tray conveyance.

As shown in FIGS. 33 (a) and 33 (b), the inspection / removal tray 18 and the supply tray 16 are transported on the upper surfaces of the inspection / removal conveyor 20 and the supply conveyor 22. The lifting prevention guide 84 for preventing the lifting of the upper and lower portions 18 and 16 is provided on the conveyor 2 in the embodiment.
It is divided into a plurality of parts along the transport direction of 0,22.

Then, as shown in FIGS. 33 and 34,
A substantially central portion of the inspection / removal conveyor 20 and the supply conveyor 22 in the transport direction is provided with an inspection plate 36 for inspecting the lack of the inspection-removed seedling and a claw 66 for grasping the supplemented seedling.
Are paths for moving in the lateral direction, and are opened so as not to hinder the inspection plates 36 and the like from moving in the lateral direction. Further, rising portions 84a are formed at front and rear ends of the lifting prevention guide 84 in the transport direction to prevent the trays 16 and 18 from being caught during transport.

As shown in FIG. 35, the inspection plate 36 can pass across the inspection / removal conveyor 20 at substantially the center of the inspection / removal conveyor 20 in the transport direction and the inspection / removal conveyor 20 to inspect the seedlings for lack. In this portion, an end 86a of a conveyor table 86 that supports the conveyor belt 90 from below is bent downward, and a recess 21 is formed there.

A guide roller 88 is provided below the center of the recess 21.
The path of the conveyor belt 90 is wound in a state of being curved downward. A roughly-wound coil spring 92 is disposed substantially at the center of the recess 21 and at substantially the same height as the conveyor table 86. The drain hole on the bottom of the cell 18a and the coil spring 9
An air passage 3 as described later is placed on a line connecting the center of
3 is formed.

When each cell 18a of the inspection / removal tray 18 is intermittently conveyed by the conveyor for each row and reaches the inspection position, the corresponding row of cells 18a is placed on the upper portion of the coil spring 92, and In this state, the inspection plate 36 is moved in the horizontal direction to perform the inspection. In this case, the vacuum nozzle 52 also moves integrally with the inspection plate 36.

FIG. 36 is a view showing the principle of suctioning the cultivated soil in the cell 18a by vacuum, and the drain hole 23 on the bottom surface of the cell 18a is removed from the floor surface by the spacer 104 interposed in the floor portion. With the cell 18 floating,
The vacuum nozzle 52 descends on the upper surface of a and comes into close contact with the upper side. Thus, when the vacuum is started, the drain hole 23 becomes an air suction port, and the cultivated soil and the defective seedling are sucked through the vacuum nozzle 52.

That is, each cell 18a of the inspection / removal tray 18 is formed with a small hole 23 for draining water on the bottom surface thereof. The coil spring 92 is arranged in the concave portion 21 of the conveyor 20 so that the cultivation soil and the like inside the cell can be sucked by the vacuum means 32 without blocking.

As a result, as shown in FIG. 37, the cell 1
An air passage 33 for bleeding air is formed below the drain hole 23 of 8a.

FIG. 38 is a view showing the details of the concave portion 21. The upper surface of the concave portion 21 serves as a transport path for the inspection / removal tray 18, and a guide plate 98 for connecting the transport path. Is attached. A central portion of the guide plate 98 is bent downward to form a groove 100, in which the coil spring 92 is provided.

The conveyor belt 90 and the upper surfaces of the guide plate 98 and the coil spring 92 are arranged at substantially the same height. In particular, the inspection / removal tray 18 moves on the coil spring 92 by point contact. For this reason,
The conveyance resistance of the inspection / removal tray 18 is small, and the inspection / removal tray 18 does not get caught when passing through the recess 21.

Although not shown, each cell 18a of the inspection / removal tray 18 is located at an appropriate position substantially at the center of the recess 21.
Is provided, and the inspection / removal conveyor 20 is stopped by detecting each cell 18a that has reached the inspection position by the tray sensor.

39 (a) and (b) (and FIGS. 2 and 35) are provided on the left and right sides of the inspection / removal conveyor 20 in the transport direction and at the standby position of the inspection plate 36. As shown in FIG. 2), an air blow nozzle 94 for blowing the air to the inspection sensor 38 to clean the inspection sensor 38 is disposed to face the inspection plate 36 by the bracket 96 so as to sandwich the inspection plate 36 from the outside.

That is, if water droplets or mud of the seedlings adhere to the inspection sensor 38, there is a risk of detection failure. Therefore, when the inspection plate 36 comes to the standby position, the air blow is activated to blow the water droplets or mud. I try to drop it. The air blow nozzle 94 is connected to the inspection plate 3
By providing it at the standby position of No. 6, it does not disturb the normal work, and the direction of blowing air is obliquely downward to prevent the seedling from falling.

Next, FIGS. 40 to 42 show another embodiment in which the seedlings around the test seedling are separated to detect the lack of the seedling or the like.

In general, when trying to extract or supplement seedlings from each cell in the cell tray 18, there is a possibility that the true leaves of adjacent seedlings are entangled and the adjacent seedlings are damaged.
For this reason, as shown in FIG. 40, two bars 108, 108 disposed opposite to each other are connected to be openable and closable by a cylinder 110, and the bar
If 8 is spread out, the surrounding true leaves will be pushed outward to isolate only the seedlings to be treated.

For example, conventionally, a sensor holder having a light emitting / receiving element mounted thereon is inserted into the upper surface of a cell tray,
Since the stem whose light was blocked between the sensors was the object of detection, there was a possibility that a drooping leaf would be erroneously detected. However, as shown in FIGS. 41 (a) to 41 (c), the tip of the sensor holder 112 By attaching a seedling dividing unit 114 for scraping the seedlings and attaching the sensors 38a and 38b to the rear of the seedling dividing unit 114, it is possible to prevent the detection of a drooping leaf.

Further, as shown in FIG. 42, when the conveyor 116 is formed in a mountain shape, when the seedlings to be treated reach the top, the seedlings before and after in the conveying direction tend to fall down on the slope direction. Seedlings will no longer interfere with other adjacent seedlings, making it easier to pull out or supplement the seedlings.

FIGS. 43 (a) and 43 (b) are diagrams showing another embodiment of a detecting device for detecting a lack of a seedling on a seedling tray.

According to this detecting device, in order to detect whether seedlings are planted in each cell 118a of the seedling tray 118, the seedling detecting sensors 12
The fork 122 to which 0 and the cell detection sensor 124 are attached is inserted from the lateral direction of the seedling tray 118, and the number of times the cell detection sensor 124 detects the cell 118a is counted. At the same time, the cell detection sensor 124
While detecting a, the sensor number of the specific seedling detection sensor 120 when the seedling detection sensor 120 cannot detect the seedling is determined.

In this way, if the count number of the cell 118a by the cell detection sensor 124 and the sensor number are calculated by a microcomputer or the like, the specific cell 11 having no seedling can be obtained.
The coordinate number of 8a can be determined. For example, in the figure, when the fork 122 comes to the third cell 118a from the movement start point, it can be seen that the seedling at the position of the number D of the seedling detection sensor 120 is missing.

Next, the operation of the present embodiment will be described.

FIGS. 44 (a) to 44 (e) show that a predetermined cell 18a of the inspection / removal tray 18 is detected to be missing.
The process of sucking the cultivated soil in a by the vacuum means 32 is shown.

That is, the inspection / removal tray 18 is
The removal conveyor 20 intermittently transports each row of the cells 18a, and when the tray sensor detects that a predetermined row has reached the inspection position, the conveyor 20 stops. Then, the inspection plate 36 waiting on the side of the inspection / removal conveyor 20 moves in the column direction of the inspection / removal tray 18 to start the inspection. In this case, the vacuum nozzle 52 also moves integrally with the inspection plate 36.

Then, the inspection sensor 38 determines whether or not there is a missing seedling in the inspection / removal tray 18 for each cell 18.
a, and when the lack of the seedling is detected in the predetermined cell 18a, the deceleration of the test plate 36 is started from that position, and when the seedling of the next cell 18a is detected, the test plate 36 The movement is stopped (FIGS. 44A and 44B).
reference). In this state, immediately below the vacuum nozzle 52, the predetermined cell 18a where the seedling is missing is located.

Next, the operating rod 3 of the lifting cylinder 34
4b is contracted, and the vacuum nozzle 52 moves down together with the vacuum base 40. This vacuum nozzle 52
When the stopper 55a of the frame 55 comes into contact with the guide stopper 53,
The frame 55 does not descend any more (see FIG. 44 (c)).

Further, as the operating rod 34b contracts, only the vacuum nozzle 52 moves down with respect to the frame 55. Due to the lowering of the vacuum nozzle 52, the vacuum guide 54 is pushed outward and opened, and the seedlings adjacent to each other are separated by the vacuum guide 54. Thereafter, when the distal end opening of the vacuum guide 54 contacts or approaches the upper surface of the cell 18a, the contraction of the operating rod 34b stops, and the soil in the cell 18a is sucked by the vacuum (see FIG. 44 (d)). ).

In this case, a coil spring 92 is provided at the inspection position of the seedling on the inspection / removal conveyor 20 along the row direction of the cells 18a. , The soil in the cell 18a is quickly and reliably removed (see FIG. 35).

When the suction of the cultivation soil is completed, the rod of the switching cylinder 42 is contracted to slide the suction port of the vacuum head 44 so as to match the hole 49 formed in the vacuum base 40. As a result, the seedling entrance 50
Is exposed, the supplemented seedlings planted on the supply tray 16 are grasped by the claws 66 and transferred toward the seedling dropping port 50 by the seedling transfer means 56, and the seedlings are transferred to the seedling dropping port. It is dropped from above 50 (see FIG. 44 (e)).

FIGS. 45 (a) to 45 (d) show the supply tray 16
The process when the supplementary seedling 17 is grasped by the nail 66 from the cell 16a of FIG.

That is, the pawl 66 provided below the insertion / removal cylinder 64 is positioned obliquely above the predetermined cell 16 a of the supply tray 16. At this time, the claws 66 are in an open state (see FIG. 45A).

Next, the operating rod of the insertion / removal cylinder 64 is extended obliquely downward, the nail 66 is pierced into the seedling 17, and the opening / closing chuck 68 is operated to close the nail 66.
7 (see FIG. 45 (b)).

Next, the operating rod 6 of the lifting cylinder 62
2a is contracted, the seedling 17 grasped together with the insertion / extraction cylinder 64 is raised, and the seedling 17 is pulled out from the cell 16a (see FIG. 45 (c)).

Subsequently, the seedling 17 held by the claws 66
Is transported above the inspection / removal tray 18 by the linear drive device 58 (see FIG. 35D).

Next, FIGS. 46 (a) to 46 (c) show the supplemented seedlings 1 transferred above the inspection / removal tray 18 as described above.
7 shows a process in which 7 is dropped from above the vacuum nozzle 52.

That is, when the supplementary seedling 17 comes to a position above the seedling drop opening 50, positioning is performed and the transfer is stopped (see FIG. 46 (a)).
2, the supplementary seedling 17 is inserted into the vacuum nozzle 52 from the seedling drop opening 50, and the opening / closing chuck 68 is operated to open the claw 66 (FIG. 4).
6 (b)).

Further, the operating rod of the insertion / removal cylinder 64 is contracted, and the nail 66 is pulled out of the seedling 17 while the supplementary seedling 17 is hooked on the edge of the seedling drop opening 50. As a result, the supplemented seedlings 17 are dropped from the upper seedling drop opening 50 in the vacuum nozzle 52 downward, and the inspection / removal tray 1
The predetermined cell 18a of FIG. 8 is supplemented (see FIG. 46C).

[0101]

According to the first aspect of the present invention, the drainage hole of the cell is communicated with the air passage of the inspection / removal section when sucking and removing the cultivated soil from the cell at the seedling missing portion. Is sucked into the tubular member by the supply of air from below, and is quickly and reliably removed.

According to the second aspect of the present invention, a flat cell tray is transported by the inspection / removal conveyor, and the cylindrical member is moved along one row of the cell tray. In addition, since the inspection / removal conveyor portion facing the above-mentioned row is guided downward so as to form an air passage, in conjunction with the movement of the tubular member, the soil is quickly cultivated from the cells of the seedling missing portion. Can be removed, and the cell tray can be transported reliably and accurately.

According to the third aspect of the present invention, when descending the tubular member, the front and rear side plates can be separated from the position where they approach each other to separate adjacent seedlings. The seedlings do not get in the way, do not catch and damage the seedlings, and when the tubular member is in the lowered position, the front and rear side plates and the left and right plates surround the cells of the seedling missing part, The soil in the cell can be sucked reliably and quickly.

According to the fourth aspect of the present invention, the left and right plates move integrally with the tubular member, and the sensor detects the absence of seedlings in the cell and separates the left and right adjacent seedlings. When the tubular member descends, the seedlings do not hinder the seedlings and do not hurt the seedlings, and the left and right guide plates act as guides for the tubular members, so that the tubular members can be accurately placed in the cells of the seedling missing part. Can be matched.

According to the fifth aspect of the present invention, in a state where the vacuum base stands by at a position where the vacuum base is retracted from the opening of the tubular member, the supplemented seedling is supplied from the opening and passes through the tubular member to remove the seedling missing portion. The cell can be refilled, and the vacuum head is aligned with the hole of the vacuum base so that it does not stick to the base while maintaining the suction and suction state, and continuously operates the vacuum to improve efficiency. In addition to performing a good soil removal operation, it is possible to prevent a large load from acting on the vacuum due to the blockage of the vacuum head.

[Brief description of the drawings]

FIG. 1 is a front view of a seedling filling device according to the present invention.

FIG. 2 is a side view of the seedling filling device according to the present invention.

FIG. 3 is a plan view of a seedling filling device according to the present invention.

FIG. 4 is a diagram showing a positional relationship between a horizontal frame and an inspection / removal / supply linear drive device.

FIG. 5 is a front view of a state in which an inspection unit and a vacuum unit are attached to the inspection / removal linear drive device.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a plan view of FIG. 5;

FIG. 8 is a diagram showing a side view shape of the inspection plate.

FIG. 9: Attach a vacuum nozzle or the like to the elevating cylinder,
FIG. 4 is a plan view showing a state in which these are integrally movable by a linear driving device.

FIG. 10A is a front view showing a state in which an inspection plate is attached to a lower part of a lifting cylinder, and FIG. 10B is a side view thereof.

FIG. 11 is a diagram illustrating a relationship between an opposing interval of an inspection plate and an outer width of a vacuum nozzle.

FIG. 12A is a cross-sectional view of a spacer mounted in the vacuum nozzle, and FIG. 12B is a diagram showing a dimensional relationship between the vacuum nozzle and a cell having 128 holes.
(C) is a figure which shows the dimensional relationship between a vacuum nozzle and a cell of 200 holes.

FIG. 13 is a diagram showing a state in which the vacuum head can be switched between a vacuum position and a standby position.

FIG. 14 is an external view of a state in which a vacuum nozzle and the like are integrally attached to a lifting cylinder via a vacuum base.

FIG. 15 is a side view of a state in which a vacuum nozzle and the like are integrally attached to a lifting cylinder via a vacuum base.

FIG. 16 is a view showing a state where a vacuum guide is attached below the vacuum nozzle.

FIG. 17A is a diagram showing a positional relationship between an inspection plate, a vacuum nozzle, and a vacuum guide;
(B) is a diagram showing a state in which a vacuum nozzle is arranged between the left and right inspection plates so as to be insertable, and (c) is a diagram showing
FIG. 3 is a plan view showing a positional relationship among an inspection plate, a vacuum nozzle, and a vacuum guide.

FIG. 18 is a diagram showing the relationship between the width of the left and right inspection plates and the cell pitch.

FIG. 19A is a diagram illustrating a relationship between the widths of the left and right inspection plates and a cell pitch, and FIG. 19B is a diagram illustrating a state where guides are attached to the left and right inspection plates.

FIG. 20A is a front view showing a state in which the inspection means detects a lack of a seedling in each cell of the inspection / removal tray, and FIG. 20B is a side view thereof.

FIG. 21 is a diagram illustrating a state where the vacuum nozzle is lowered from a standby position toward a cell of a seedling missing portion.

FIG. 22 is a diagram showing a state in which a vacuum nozzle is brought close to the upper surface of a cell in a portion where a seedling is missing, and soil in the cell is sucked.

FIG. 23 is a diagram illustrating a state where the vacuum head is moved to a standby position after sucking the soil in the cell by the vacuum nozzle.

FIG. 24 is a view showing a state where a predetermined step is provided between a supply tray and an inspection / removal tray.

FIG. 25 is a front view of a state in which a claw for seedling clamping, a cylinder for moving the claw vertically and diagonally, and the like are attached to the supply linear drive device.

FIG. 26 is a side view of FIG. 25.

FIG. 27 is a plan view of FIG. 25.

FIG. 28A is a diagram showing a state where the seedling clamping claws are open, and FIG. 28B is a diagram showing a state where the seedling clamping claws are closed.

FIG. 29 (a) is a view showing a state where the shape of the seedling drop opening and the inner shape of the vacuum nozzle are the same, and FIG.
FIG. 3 is a diagram showing a state where a supplemented seedling is inserted into a seedling drop opening and a nail is pulled out.

FIG. 30 is a diagram showing a relationship between the inner shape of the vacuum nozzle and the outer shape of a cell of the inspection / removal tray.

FIG. 31 is a diagram showing a relationship between the inner shape of a vacuum nozzle and the outer shape of a cell of an inspection / removal tray.

FIG. 32 is a diagram illustrating a state in which tray guides are provided on the left and right sides in the transport direction of the transport conveyor.

FIG. 33 (a) is a diagram illustrating a state where a lifting prevention guide is provided on a supply conveyor, and FIG. 33 (b) is a diagram illustrating a state where a lifting prevention guide is provided on an inspection / removal conveyor.

FIG. 34 is a diagram showing a state in which a substantially central portion of the transport conveyor is opened and lift prevention guides are provided before and after the central portion.

FIG. 35 is a diagram showing a state in which a concave portion is provided substantially at the center of the inspection / removal conveyor.

FIG. 36 is a view for explaining the principle when sucking soil in a cell by a vacuum nozzle.

FIG. 37 is a view showing a state in which a concave portion is provided substantially at the center of the inspection / removal conveyor.

FIG. 38 is an enlarged sectional view of a recess provided substantially at the center of the inspection / removal conveyor.

FIG. 39 (a) is a front view showing a state in which an air blow nozzle is attached to the outside of an inspection plate, and FIG. 39 (b) is a side view thereof.

FIG. 40 is a diagram showing a state where a seedling adjacent to a test seedling is squeezed by a squeezing mechanism.

FIG. 41 (a) is a diagram showing another example of pushing a seedling by a pushing mechanism, FIG. 41 (b) is a plan view showing a shape of a tip portion of a sensor holder, and FIG. It is the side view.

FIG. 42 is a diagram showing an example in which a conveyor is formed in a mountain shape to isolate a seedling adjacent to a seedling to be treated.

FIG. 43 (a) is a plan view of a detection device for detecting a lack of a seedling planted on a cell tray, and FIG. 43 (b) is a front view thereof.

FIGS. 44 (a) to (e) show steps for detecting missing seedlings in each cell of the inspection / removal tray by the inspection means, and sucking the soil in the cells having the missing seedlings by the vacuum means. FIG.

FIGS. 45 (a) to (d) are diagrams showing steps when gripping seedlings are supplied from each cell of the supply tray and transported to a seedling dropping port.

FIGS. 46 (a) to (c) are diagrams showing steps when a seedling transferred to a seedling dropping hole is dropped while being guided by a vacuum nozzle, and the seedling is filled in a cell in a missing portion. .

FIG. 47 is a diagram showing an appearance of a cell tray in which seedlings are planted in each cell.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Seedling replenishment apparatus 12 Supply part 14 Inspection / removal part 16 Supply tray 16a Cell 17 Seedling 18 Inspection / removal tray 18a Cell 19 Seedling 20 Inspection / removal conveyor 21 Depression part 22 Supply conveyor 23 Drain hole 26 Linear drive device 27 Operation panel Reference Signs List 30 inspection means 32 vacuum means 33 air passage 34 elevating cylinder 36 inspection plate 38 inspection sensor 40 vacuum base 42 switching cylinder 44 vacuum head 49 hole 50 seedling drop hole 52 vacuum nozzle 53 guide stopper 54 vacuum guide 54a fulcrum 56 seedling transfer means 58 Linear drive 62 Lifting cylinder 64 Removal cylinder 66 Claw 68 Opening / closing chuck 76 Tray guide 84 Lifting prevention guide 90 Conveyor belt 92 Coil spring

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shigeyoshi Tsukamoto 1-40-2 Nisshin-cho, Omiya-shi, Saitama Pref. Organizing Agency for Research on Specified Industrial Technology in Biology (72) Inventor Izumi Okayasu 1-40, Nisshin-cho, Omiya-shi, Saitama Address 2 Within the Organization for Promotion of Specified Industrial Technology for Biological Sciences (72) Inventor Yoshihiro Yuzaki 667 Iida-cho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. 667, Iya-cho, Ichicho-cho 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Yoshihisa Yurino 667, Iza-cho, Oji-machi, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. (72) Koichi Yamamoto Higashi-Izumo, Yatsuka-gun, Shimane Prefecture 667 Iyacho, Ichicho, Tokyo 1 Mitsubishi Agricultural Machinery Co., Ltd.

Claims (5)

[Claims] 1. A test apparatus comprising: a supply section on which a cell tray in which seedlings are planted is placed in each cell; and an inspection / removal section in which a cell tray in which seedlings are planted in each cell. In the seedling replenishing device, which detects the lack of seedlings on the cell tray in the removing unit, removes the cultivated soil of the cells in the seedling missing portions, and supplies the cells with seedlings from the cells in the supply unit. A cylindrical member movably provided on the cell of the portion, a vacuum head communicating with an upper end of the cylindrical member, an air passage provided at a position facing the cylindrical member in the inspection / removal section, When the lower end of the shaped member is brought into contact with or close to the cell of the seedling-missing portion, and when cultivation of the cell is sucked by the vacuum head, a drain hole of the cell is located in the air passage. Seedling replenishment device 2. The inspection / removal unit has an inspection / removal conveyor on which a cell tray having a large number of cells can be placed in a plane, and the inspection / removal conveyor moves the cell trays one by one. While being conveyed, the portion facing the one row is guided so as to be depressed downward to form the air passage, and the tubular member is configured to move along the one row. Item 5. The seedling filling device according to Item 1. 3. The cylindrical member is vertically moved, and a side plate is rotatably hung at a lower end thereof at a front and rear portion of the cell tray in the one row direction, and is disposed on left and right portions of the cylindrical member. And a plate that moves integrally with the movement of the tubular member in the one row direction, wherein the front and rear side plates are located closer to each other at a position above the tubular member, and The seedling replenishing device according to claim 1, wherein the device is configured to be separated from each other as the cylindrical member descends. 4. A sensor for detecting a seedling on a cell is provided on the left and right plates, and the inner width of the left and right plates is set slightly larger than the left and right outer widths of the tubular member. The seedling filling device according to claim 3, wherein the tubular member is inserted between the left and right plates when descending. 5. A vacuum base is fixed to an upper end of the cylindrical member, and an opening of the cylindrical member is provided in the vacuum base, and a hole is provided adjacent to the opening. The seedling replenishing device according to any one of claims 1 to 4, wherein the device is movably supported between the opening and the hole.